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Questions tagged [two-factor-authentication]

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0answers
101 views

Ubuntu One 2FA lost device removal

I lost access to my Google Authenticator app and my backups aren't working...lesson learned. Now I need to remove the 2FA device from my Ubuntu One account but of course you have to have the device ...
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0answers
25 views

Ubuntu google authenticator only for ssh not physical machine [duplicate]

I set up google authenticator for ssh login, and it works fine. However, when restart the computer and login form the physical machine, it requires the google autheticator code also - is it possible ...
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0answers
29 views

Avoid providing verification code request for specific time using Google authenticator

I've just activated the two factor authentication using Google authenticator and I'm now required to provide the verification code any time that I'm logging to the system. How to avoid the ...
-1
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1answer
276 views

Does Ubuntu really not support Google 2-factor authentication?

I have spent the best part of a day trying to get Ubuntu 17.04 to work happily with Google 2-factor authentication. I found that with 2FA turned on in my Google account settings I could add the ...
1
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0answers
33 views

Two user authentication to use command

This might seem weird but I'm trying to find a way to have a double authentication requirement for the use of certain specific command on my server. For example, rebooting the machine would require ...
1
vote
1answer
599 views

Avoid verification code request when using sudo using Google authenticator

I've just activated the two factor authentication using Google authenticator and I'm now required to provide the verification code any time that I use sudo. How to avoid the authentication step when ...
3
votes
1answer
199 views

Can't access server, 2FA rejecting verification codes and back-up codes don't work

I have just configured the google-authenticator 2FA for a server I have and am now unable to sign in as the connections are being rejected by. I get the following message: Received disconnect from ...
1
vote
0answers
315 views

Google 2-way & XRDP?

I installed the 2-Way login like in this manual: how to setup two factor authentication in Ubuntu for Ubuntu users using Google authenticator? So now I'm trying to get it working with XRDP. I ...
2
votes
2answers
676 views

SSH key-based auth asks for password on first login [duplicate]

I have a fresh Ubuntu 16.04.1 LTS system and have noticed that key-based SSH authentication asks for the account's password the first time I login to the machine and subsequent SSH attempts work ...
2
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1answer
193 views

A two-factor authentication app that runs on Ubuntu?

Most two factor authentication apps are available for Android or iOS. I do not use a smartphone. Is there a two factor authentication app that runs on Ubuntu?
3
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2answers
2k views

google authenticator for certain users

After enabling Google authenticator (2 step authentication) on one of my testing servers running ubuntu 16.04 (LTS), I noticed I couldn't login anymore with a user who doesn't have a google ...
1
vote
1answer
419 views

Still being Prompt for Password After enabling Public Keys

When I added my public key into my .ssh/user/authorized_keys file and I saved and restarted my server it gave me this error: initctl: Unable to connect to system bus: Failed to connect to socket /var/...
16
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2answers
1k views

How can I further secure my system using 2 factor authentication?

The title pretty much says it. I have been hearing more about 2 factor authentication, one-time passwords, hard-tokens, and other improved security features. With the decreasing security of using just ...
2
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2answers
1k views

Happlink Plug-up FIDO U2F Security Key. Why it doesnt work immediately in Ubuntu

Ubuntu 12.04LTS Happlink Plug-up FIDO U2F Security Key. Why it doesn't work immediately in Ubuntu. http://sk.happlink.com/plugup/en/ What shall I do with it?
3
votes
1answer
94 views

Adding Two Factor Verification to Ubuntu Server SSH login

I have an Ubuntu server that I have physical access to and is currently only accessible via the local area network. I am considering allowing myself to connect remotely and - whilst I realise a ...
11
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1answer
13k views

how to setup two factor authentication in Ubuntu for Ubuntu users using Google authenticator?

How to setup two factor authentication in Ubuntu for Ubuntu users using Google authenticator (It can also be setup for non Google accounts)?
6
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4answers
4k views

Luks two-factor authentication

is it possible to create an encrypted partition with a two-factor authentication ( decryption with password and keyfile ) with LUKS, like in truecrypt?